Abstract: A self-locking grip for bags and sheet material is provided having a multiplicity of grit-like points positioned to be brought into firm gripping relation with sheeting or the like draped under tension over these points. Typically, the sheeting is draped over a grit-covered semi-circular surface merging with the grit-covered sidewall of a slot, and held in contact therewith by spongy resilient material fixed to the other side of the slot. This resilient material is readily compressed to receive or to release the edge of the sheet material.

Abstract: A bag holder for holding a plain bag in an open position for filling by supporting in a cuff at the bag opening has a bag support with improved cuff attachment means without accessory bands or clamps for obtaining quick installation and secure retention of the bag, including those made of slippery plastic film. In one construction of the bag support, resilient tensioning means provides nearly constant low force peripheral tensioning of the cuff by three corner grips of appreciable area. Each corner grip has a smoothly curved initial grip surface for holding the outer fold of the cuff tensioned over a smoothly curved snubber grip surface thereby holding the cuff with a self locking action. A grip surfacing on the grip surfaces provides a high grip coefficient for obtaining self locking of the snubber grip when a bag load is applied.